JPS61120635U

JPS61120635U -

Info

Publication number: JPS61120635U
Application number: JP415485U
Authority: JP
Priority date: 1985-01-18
Filing date: 1985-01-18
Publication date: 1986-07-30

Description

[Brief explanation of the drawing]

添付図は本考案による前照灯の光軸調整装置の
一実施例を説明するための図であつて、第１図は
具体的な回路構成図、第２図は車輌に傾きセンサ
を取付けた場合の配置図、第３図は傾きセンサの
構造図、第４図はコイルの特性図、第５図は光軸
駆動装置の構造図である。１……傾きセンサ、２……第１の発振器、３…
…第１のカウンタ、４……ラツチ回路、５……光
軸センサ、６……第２の発振器、７……第２のカ
ウンタ、８……大小比較回路、９……モータ駆動
回路、１０……モータ、１１……タイミング・パ
ルス・ジエネレータ、１２……タイマ回路、１３
……スイツチ、１７……コア、１８……コイルリ
ング、１９……コイル。 The attached drawings are diagrams for explaining one embodiment of the optical axis adjustment device for a headlamp according to the present invention, in which Fig. 1 is a specific circuit configuration diagram, and Fig. 2 is a diagram showing a case where a tilt sensor is attached to a vehicle. FIG. 3 is a structural diagram of the tilt sensor, FIG. 4 is a characteristic diagram of the coil, and FIG. 5 is a structural diagram of the optical axis drive device. 1... Tilt sensor, 2... First oscillator, 3...
... first counter, 4 ... latch circuit, 5 ... optical axis sensor, 6 ... second oscillator, 7 ... second counter, 8 ... magnitude comparison circuit, 9 ... motor drive circuit, 10 ... Motor, 11 ... Timing pulse generator, 12 ... Timer circuit, 13
...Switch, 17...Core, 18...Coil ring, 19...Coil.

Claims

[Scope of utility model registration request]

a tilt sensor whose output changes in accordance with the tilt of the vehicle body; an optical axis sensor which detects the optical axis direction of the headlight; and a first oscillator whose oscillation frequency changes in accordance with the change in the output of the tilt sensor; a second oscillator whose oscillation frequency changes according to changes in the output of the optical axis sensor; a first counter that counts the output of the first oscillator; and a second counter that counts the output of the second oscillator. a counter, a latch circuit that holds the output signal of the first counter, a magnitude comparison circuit that compares the outputs of the latch circuit and the second counter, and a motor drive circuit that rotates the motor in the forward and reverse directions based on the output of the magnitude comparison circuit. , an optical axis drive device that changes the direction of the optical axis of the headlamp by rotation of the motor, a timing pulse generator that operates the first and second counters for a certain period of time, the latch circuit and the motor drive. 1. An optical axis adjustment device for a headlamp, comprising: a timer circuit for controlling the operation of the circuit; and a switch circuit for controlling the operation of the timer circuit.